Bidirectional 1500W TVS for 24V rail protection
The 1.5SMC30CA-E3/57T: Its 25.6V reverse standoff voltage makes it a direct fit for protecting 24V nominal DC buses — the clamping voltage stays at 41.4V max when the surge current hits 36.2A, keeping downstream silicon within its breakdown margin. No power line protection feature — this is a pure transient suppressor, not a crowbar or filter.
Clamping voltage and surge current — what they mean for the BOM
For a 24V rail with a 40V abs-max input on the downstream converter, this TVS holds the transient below the failure threshold.
Vishay lists the 1.5SMC30CA-/57T as Active — no end-of-life notice, no last-time-buy window. This is a production part suitable for new designs and ongoing BOM positions.